Your car is beauteous. Love that color. A hair dryer will help you take that dealership sticker (at least that's what it looks like in the photo - hard to tell) off the back bumper - a trick I picked up from one of the detailing gurus here on the forum. As for the seat heater question, I dunno. My seat heater works, but it only heats my lower back. Is it supposed to heat more?
BTW - I'm 6'3" too, and I can sympathize with the fit and ingress/egress issues. We're willing to put up with it, cuz we love our Crossfires.